Talking-machine.



H. W. HESS.

TALKlNG MACHINE.

APPLICATION FILED AUG-7. I914.

Patel lted 32111.3(),1917.

barren sraras rarnnr carton.

HARRY W. HESS, OF NEW YORK, N. Y.

TALKING-MACHINE.

To all whom it may concern:

Be it known that I, I'IARRY IV. Hess, a citizen of the United States, residing atNew York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Talking- Machines; and I do hereby declare the following to be a. full, clear, and exact description of the invention such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention has relation to certain improvements in talking machines, whereby the desired degree and quality of resonance for magnifying the production of sound may be obtained.

The principal object of my invention is the provision of improved resonant means of an inexpensive character, whereby the disadvantageous effects of horns and similar structures are obviated.

The invention is illustrated in a number of preferred forms in the accompanying drawings, wherein Figure 1 is a side elevation of one embodiment of the invention, Fig. 2 is a horizontal sectional view and Fig. 3 is a vertical section on the line 33 in Fig. 2...

In the drawings, the usual revolving platform is shown at 10, mounted upon the revoluble shaft 11, driven by a motor within the box 12. The stylus 13 acts upon a diaphragm in the holder 14 supported upon a hollow tone arm 15, and moving over the re volving record in a well known manner.

While I have shown the invention as applied to a moving diaphragm holder and a flat record, it is to be understood that I do not limit myself to the embodiment of my invention in connection with this particular type of machine. Any machine having a tone arm and a box upon which it is mounted is capable of being constructed in accordance with my invention.

The invention in one aspect, broadly considered, consists in forming one of the walls of the motor boxupon which the record is carried while i1 use so that it provides the resonating agent or vibrating board. The

Specification of Letters Patent.

Patented Jan. 30, 1917.

Application filed August 7, 1914. Serial No. 855,654.

sound waves gathered by the tone arm are then projected against this resonating agent, and rebound therefrom freely and without lateral confinement.

In the form of my invention shown in Fig. 1 a suitable vibrating board 16 is inserted in one corner of the box 12, being preferably slightly inclined, as made clear in Figs. 2 and 3, and having its edges suitably secured to the main sides of the box, as by gluing, for instance. The reinforcing strips 17 may be used to brace the edges of the board 16.

As shown in Figs. 1 and 3, the tone arm passes down through the cover 18, of the box, and is turned so that its opening 19 faces the board 16, thus Iprojecting the sound against the same. The exact angle of inclination of the pipe opening is not material, so long as it carries the sound waves against the vibrating board and makes the resonance of the latter available.

The quality and volume of tone produced by employment of resonating agents made in accordance with my invention are greatly superior to those produced by the usual horns, whether placed within the supporting box or outside of t.

Various changes may be made in the embodiment of my improvements Without departing from the scope of my invention, and I do not limit myself to the details herein shown and described.

-What I claim is- 1. In a talking machine, a box for accommodating the usual motor and having a resonant wall so placed as to afford no material obstruction to lateral transmission of sound, and a tone arm carried by said box and so placed as to project sound waves against the outer surface of said wall, substantially as described.

2. In a talking machine, a box for the motor having a resonant wall placed across a recess at one corner thereof, and a tone arm extending downward through the projecting top of said box, so as to project sound waves against the outside of said resonant wall, substantially as described.

3. In a talking machine,-. a box for the In testimony whcreof,1 afiix my signature, motor having a resonant Wall placed across a in presence of two Witnesses. recess at one corner thereof in an inclined position, and a tone arm projecting (lown- HARRY Hnbb' ward through the projecting top of the box \Vitnesses: and having its lower extremity turned to- KATHARINE C. MEAD, Ward said Wall, substantially as described. II. S. MACKAYE. 

